#include <stdio.h>

typedef struct node
{
    int a;
    char b;
}n;

int main(int argc, char const *argv[])
{
    struct node x;
    n           x;

    printf("%d\n", sizeof(int)); // 4 / 2 / ...

    // typedef 给类型取别名
    typedef int a;
    int x;
    a   y;

    typedef char s[5];
    char s1[5];
    s    s2;

    typedef char *p;
    char *q;
    p     q;



    return 0;
}
